The job I am inspecting is under the '08 Code which I believe is important due to some changes in later Codes.
The Situation:
Multi-motor machine with coordinated controllers that drive several parts.
One control cabinet for all motors controllers with one main disconnect means
(lockable breaker) and each controller protected by a set of individual fuses
on din-rail fuse holders (rocker type)
It appears to me that Exception 2 to 430.102(A) allows the one disconnecting means to serve as the disconnect for all controllers.
However it does not appear that the one main disconnect would serve as the 430.102(B) required motor disconnect as the exception to 430.102(B)(2) calls for
"the controller disconnecting means be individually capable of being locked in the open position"
Comments appreciated...
(E/C feels the one disconnect acceptable for the controllers would also be acceptable for the motors)
The Situation:
Multi-motor machine with coordinated controllers that drive several parts.
One control cabinet for all motors controllers with one main disconnect means
(lockable breaker) and each controller protected by a set of individual fuses
on din-rail fuse holders (rocker type)
It appears to me that Exception 2 to 430.102(A) allows the one disconnecting means to serve as the disconnect for all controllers.
However it does not appear that the one main disconnect would serve as the 430.102(B) required motor disconnect as the exception to 430.102(B)(2) calls for
"the controller disconnecting means be individually capable of being locked in the open position"
Comments appreciated...
(E/C feels the one disconnect acceptable for the controllers would also be acceptable for the motors)